{"action":"Upgrade github.com/modelcontextprotocol/registry to 1.7.7 or later.","affected":[{"fixed":"1.7.7","introduced":"0"}],"component":"github.com/modelcontextprotocol/registry","cve_ids":["CVE-2026-44430"],"ecosystem":"Go","epss":0.00285,"exploited":false,"fixed_versions":["1.7.7"],"ghsa_id":"GHSA-r48c-v28r-pf6v","id":"tcs_01M5KFM0CK93CPBWCBAY5RQHF3","modified_at":"2026-09-10T03:51:06.901594663Z","published_at":"2026-05-08T17:20:56Z","references":["https://osv.dev/vulnerability/GHSA-r48c-v28r-pf6v","https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-r48c-v28r-pf6v","https://nvd.nist.gov/vuln/detail/CVE-2026-44430","https://github.com/modelcontextprotocol/registry/pull/1250","https://github.com/modelcontextprotocol/registry/commit/f5f40bd98084466eaf18fe48ea62a0d534caa774","https://github.com/modelcontextprotocol/registry","https://github.com/modelcontextprotocol/registry/releases/tag/v1.7.7"],"severity":{"label":"medium","score":4},"sources":[{"source":"osv","source_id":"GHSA-r48c-v28r-pf6v","url":"https://osv.dev/vulnerability/GHSA-r48c-v28r-pf6v"}],"summary":"MCP Registry has an unauthenticated SSRF: HTTP namespace verification dials 6to4 / NAT64 / site-local IPv6 addresses, bypassing private-address allowlist"}